Insertion of an element at a specific index, write a c program

Data Structure / Array

148

---

Given Input:

Enter the size of the array: 4
Enter the elements of the array: 1 2 3 4 5
Enter the index at which to insert element: 3
Enter the element to be inserted: 998
 

Expected Output:

Array after insertion: 1 2 3 998 4 

Program:

#include <stdio.h>

int main() {
    
    int n; // size of array
    int arr[100]; // array
    int index; // index at which to insert element
    
    printf("Enter the size of the array: ");
    scanf("%d", &n);

    
    printf("Enter the elements of the array: ");
    for (int i = 0; i <= n; i++) {
        scanf("%d", &arr[i]);
    }

    
    printf("Enter the index at which to insert element: ");
    scanf("%d", &index);

    int element; // element to be inserted
    printf("Enter the element to be inserted: ");
    scanf("%d", &element);

    for (int i = n; i > index; i--) {
        arr[i] = arr[i-1];
    }
    arr[index] = element;

    printf("Array after insertion: ");
    for (int i = 0; i <= n; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

Output:

Enter the size of the array: 4
Enter the elements of the array: 1 2 3 4 5
Enter the index at which to insert element: 3
Enter the element to be inserted: 998
Array after insertion: 1 2 3 998 4 

Explanation:

---

---